Shock absorber for vehicles



W. R. COCHRAN.

SHOCK ABSORBER FOR VEHICLES.

APPLICATI QN FILED IAN. 26, 1921.

1 425 1 7 Patented Aug. 8, 1922.

'which the spring suspending links 4: are

UNHTED STATES PATENT @FFHQE.

WILLIAM E. COGI-IRAN, OF DELPI-IOS, OHIO, ASSIGNOR OF TWO-THIRDS TOBEBIEN JORDAN AND JOHN C. JORDAN, BQTH OF DETROIT, MICHIGAN.

SHOCK ABSORBER FOR VEHICLES.

' Specification of Letters Patent.

Patented Aug. 8, 1922.

Application filed. January 26, 1921. Serial No. 440,093.

description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to an improvement in shock .absorbers forvehicles and is designed more particularly for those in which aseml-elliptlc spring is connected at its ends with the axle, as in theFord automobile, and it consists in the parts and combination of partsas will be more fully explained and pointed out in the claims.

The accompanying drawing Figure :1 is a view perspective of-my inventionapplied to the rear axle of a vehicle, and Figure :2 is a view of amodified form of clip.

1 represents a sleeve or casing enclosing the rear axleof an automobile,and 2 the brake-wheel housing carrying bracket 3 .to

pivotally mounted in the usual and well known manner. 5 is the vehiclespring, semi-elliptic in shape and secured at its ends to suspensionbolts 6 which are carried in the free depending ends of the springsuspending links 4:.

The construction thus far described is the well known construction nowin common use on Ford and other machines. My improved shock absorbercomprises a plunger 7 provided with an end head or block 8 havingupwardly projecting lugs 9 which embrace the opposite sides of thevehicle spring 5 near the free end of the latter and prevent lateralvibration of the same. The lower face of the block 8 is curved toconform to the sleeve 1 or to the axle as the case may be and reststhereon, and the extreme outer end of the block is adapted to bearagainst the free ends of the links or against the ends of the vehiclespring 5 secured to said bolt 6. This plunger is provided with ashoulder 10 against which one end of the coiled spring 11 bears. Thislatter spring embraces the rounded inner end of the plunger 7 and bearsat its opposite end against the clip 12 which latter is yoke-shaped asshown and is secured to the sleeve 1 or to the axle by the bolt 13 andsuitable clamping nut. This clip is of course open at its lower end, theopening being' sufiiciently large to pass over the sleeve or the axle,and is clamped on the sleeve or axle after the parts have been properlyassembled. This clip is provided with an upward extension 14 having anopening therethrough for the passage of the plunger 7, and this upwardextension forms an abutment for the opposite end of the coiled spring11.

In Figure 1 I have shown the clip 12 with an upward extension equal inwidth to the body of the clip, but if desired, the latter may be struckup from sheet metal and the end extension lei turned up, as shown inFigure 2. i

In assembling the absorber the spring and clip are applied to theplunger 7 and the spring is put under tension by a nut or similar deviceapplied to the free end of the plunger and bearing of course against theextension 14 of the clip 12. The plunger with spring thus under tensionis then applied to the sleeve of the vehicle when the vehicle spring 5is in its normal condition or not compressed. The plunger is'applied tothe sleeve 1 with the free end of its block 8 in contact with the freeends of the links 4:, or with the end of the spring 5 which is loopedaround the bolt 6 after which the clip 12 is clamped to the sleeve bythe bolt 13. This holds'the spring 11 under tension and the block 8 ofthe plunger in contact with the free ends of the links a,

hence it will be seen that as the spring 5 bends under a load, thefollower block 8 follows up the movements of the links 4 so that in therebound of the vehicle spring 5 the shock is all absorbed by the coiledspring 11. The spring 11 is of such strength as to obstruct the freereturn movementof the links 4 and thus causes the latter, after acompression of the spring 5, to return to normal position slowly andwithout the rebound that occurs when the spring 5 is not under control.

This device is complete in itself and can be applied to any vehicle inwhich the springs 5 are located parallel with and above the axle,without any change whatsoever in the construction of the vehicle, itbeing simply necessary to first put the spring 11 under tension andsecure the clip to the sleeve 1 after which the nut or other device usedfor compressing the spring 11 is preciselyjthe same ayg "It is evidentthat many slight changes inventio 1;11ence';,1; Would have understoodmight heresorted to in the relative f arrangein'ent otparts shownanddejscrih'ed ithout departin'g -from-the spiritand, scope of my that Ido not ish to confine myself to the sexactjconstruction andarrangementof parts shown and described but, c,

: Having fully described my inveiitionlnzhat t1 ne new end'def e QWI' byL tters-Patent, 1s i 1. As a new article of manufacture, ashoclpabsorbeh comprlsing aplung'er pro- V'ided at "one end. .Witha headsuspense, rest and be supported on the 'vehicl'efaxle' 'or oaS- 'ing forthe latter and bearagam'st veh cle spring supporting 1inks,a chpca'rrymgsaid plunger and adapted to he secured to an faxlef orax'le casing, anda springjinounted on'said plunger andbearing at one end against the sameand at the other end against the clip Q" 2,1;l s a' new article ofman1ifa'cture,a

shock absorber, comprisinga plunger pro- ;videdw'ith a blo'cklat one endadapted to rest and move on tin-axle or axle casing'and bear 7.againstthej freeends of the links supporting i the Vehicle-spring, thesaid'fplunger being provided With a shoulder, a coiled spring embracingthesaid plungen at the rear of wens ing Witnesses.

theshoulder and bearing against the latter, and aclip through which therear end of the plunger passes and against which the rear endolitheuspring hears, the said clip adapted to be detachahly secured to anaxle or i 3. The combination of a headat one end the latter i"e stingi and inow ahleonthe'axle or axle casing an'd' proi ided With upward'lyturned lugs-adapted to embrace" the opposite sides of-a vehicle spnin g,

a plunger having 'a coiled spring embracing the jp lunger'gand ,1

hearing at one end against the shoulder thereon, and "aclip' throughwhich the rear end otlsald plunger moves and agalnst whl'ch the end ofsaid 'spring beairs,- the said clip adapted'to' he jdetachaihlysecuredto'wa" vehicleaxle or casing {for thelatteruz'm 4. .In ashock' absorberfor vehiclesfl the -cornhii'iation of plunger} thel'outer'i'end "ofwhich is provided with a headithe' lower si ace "or which 'isfc'uriiedto conform to thercontour or the; vehicle Y axis or} axlezcasing,ithecsaid head. being provided with-upwardly projectiiig lugs Y adaptedto embrace: the: opposite sides oi jthe vehiclespring, a coiledaspring"embracing the plungerand--vhearingxat one}; end against theshoulder onthe 'lattergaand a hlip through' which the *reartend of said plungerpasses and against which: the inner e 'idf-ofthe coiled spi'ing-ibearsnthe said clip adapted to he detachably secured toeavehi-ak;

cl'e aXle orcasing forth'e' latter: m

In test mony whereof I have :s'lgn'ed this specification in the presenceof two 'subscrib- Witnesses: I1-

. Lnwls FLANDnnsy I ANNA M. Donn, i

resi ient-1" CHRANJ

